High-frequency switch power supply for Competence
Abstract :It is little that the high frequency switching power supply system haves the bulk、Weight is light、High efficiency save energy 、It is little to output the veins waves 、Outputs noise the tension little and dynamic response performance is in good health and so on a lot of strings point ，Start gradually to substitute one another accusing the rectifier type power source but the new base power system that becomes contemporary news dispatch installation current 。In the wake of the electron technique 、Electric power electron technique 、Automatic control technique and computer control technique development ，high frequency switching power supply performance is more and more better 。Communication in the way of the button power system on base as the button style regulated power supply one kind of shape ，Its design substance and design means wholly possess distinctive quality of self 。
That the high frequency switching power supply adjust guaranties that the communication quality haves the significant effect 。For the a lot of obstructions that the communication facility happens are parts ，Merely effect some one concrete consumers either merely the effect rate putting through drops ，When but the communication power supply breaks down ，Be able to create communication completely to cease ，The old friends look upon the heart that the communication power supply is the entire communication system。
Keyword ：High frequency switching power supply 、PWM pliable button 、High frequency transformer
目 录
摘 要 Ⅰ
Abstract Ⅱ
第一章 概 述 1
1.1课题的目的和意义 1
1.2高频开关电源概述 2
第二章 高频通信开关电源的设计 4
2.1设计内容简介 4
2.2 设计思路 5
2.3主电路设计 6
2.3.1输入电网滤波器 6
2.3.2输入不控整流滤波 7
2.3.3高频开关变换器（DC/AC） 10
2.3.4输出整流滤波 10
2.3.5控制电路 11
2.3.6保护电路 17
2.3.7辅助电源 20
2.3.8驱动电路 21
第三章 高频开关电源的PWM软开关设计 24
3.1相移零电压谐振的工作原理 24
3.2相移脉宽调制变弱 26
3.3设计原理 28
3.4相移零电压软开关全桥变换器 30
3.5软开关变换器 31
3.6开关无损耗转换条件 33
第四章 高频变压器的设计总结 37
4.1概述 37
4.2变压器的设计步骤 37
4.3变压器设计的几个间题 40
4.4变压器电磁干扰的抑制 41
4.5相移零电压谐振的工作原理 41
第五章 总结 43
致 谢 44
参考文献 45
附 录 46
